CN114484280B - Flow regulating device for liquid carbon dioxide distribution - Google Patents
Flow regulating device for liquid carbon dioxide distribution Download PDFInfo
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- CN114484280B CN114484280B CN202210392272.5A CN202210392272A CN114484280B CN 114484280 B CN114484280 B CN 114484280B CN 202210392272 A CN202210392272 A CN 202210392272A CN 114484280 B CN114484280 B CN 114484280B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/08—Pipe-line systems for liquids or viscous products
- F17D1/082—Pipe-line systems for liquids or viscous products for cold fluids, e.g. liquefied gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/34—Cutting-off parts, e.g. valve members, seats
- F16K1/36—Valve members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being spring-loaded
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention belongs to the technical field of liquid carbon dioxide injection, and particularly relates to a flow regulating device for liquid carbon dioxide distribution. When liquid carbon dioxide is injected into a wellhead, after the pressure of the liquid carbon dioxide in the main pipe and each branch pipe is in a stable state, the flow monitoring device can automatically acquire the flow and the pressure value of the liquid carbon dioxide in each branch pipe, then compare the actual flow with the preset flow of the branch pipe, and adjust the opening of the electric regulating valve of each branch pipe according to the flow deviation and the pressure difference value among the branch pipes to gradually eliminate the flow deviation, thereby realizing the flow stability and preventing each branch pipe from generating bias flow.
Description
Technical Field
The invention belongs to the technical field of liquid carbon dioxide injection, and particularly relates to a flow regulating device for liquid carbon dioxide distribution.
Background
The oilfield carbon dioxide injection technology is a technology for injecting collected liquid carbon dioxide into an oil layer so as to achieve the purposes of improving the crude oil recovery rate and utilizing and sealing carbon dioxide. The equipment for metering and distributing the flow of the liquid low-temperature carbon dioxide in the carbon dioxide injection process to meet the production requirement is called a liquid carbon dioxide metering and distributing device.
When injecting carbon dioxide into the underground oil reservoir, often need to inject carbon dioxide into the multiwell simultaneously, and because the pressure of every well, factors such as technology, need adopt different speed to inject into and different injection volumes, consequently, liquid low temperature carbon dioxide's measurement distributor is just indispensable in the operation in-process, in order to guarantee to satisfy the technological requirement, can use liquid low temperature carbon dioxide flow adjusting device to adjust the carbon dioxide that injects the well head usually, but current carbon dioxide flow adjusting device is when adjusting carbon dioxide, because liquid carbon dioxide can be heated the inflation at the in-process of input well head, thereby lead to carbon dioxide flow adjusting device's output and input's pressure to have the deviation, and then influence the stable transport to the well head of liquid carbon dioxide.
Therefore, it is necessary to provide a flow regulator for distributing liquid carbon dioxide to solve the above problems.
Disclosure of Invention
In view of the above problems, the present invention provides a flow rate regulating device for distributing liquid carbon dioxide, so as to solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a flow control device for liquid carbon dioxide distribution, includes the sledge seat, the top fixedly connected with mounting bracket of sledge seat, install on the mounting bracket and be responsible for and a plurality of branch pipes, and a plurality of branch pipes all with be responsible for the intercommunication, be responsible for and all install manometer and thermometer on the branch pipe, and still install flow monitoring device on the branch pipe, flow monitoring device includes flow electrical control valve and dynamic pressure adjusting device, install the automatically controlled cabinet that is used for controlling flow monitoring device on the sledge seat.
Further, the dynamic pressure adjusting device comprises a valve body, wherein an input pipe and an output pipe are respectively connected to two sides of the valve body, the input pipe is communicated with a branch pipe, a flow electric adjusting valve is installed on the input pipe, a movable cavity and a sealing cavity are formed in the middle of the valve body, the main surface cross section of the sealing cavity is inverted trapezoid, the movable cavity is located at the top of the sealing cavity and is communicated with the sealing cavity, a liquid inlet channel is formed in the bottom cavity wall of the sealing cavity and is communicated with the input pipe, a sealing block is arranged in the sealing cavity and is matched with the sealing cavity, a first limiting rod is inserted into the bottom of the sealing block in a sliding mode, the bottom of the first limiting rod is fixedly connected with the bottom pipe wall of the liquid inlet channel, a second limiting rod is fixedly connected to the top of the sealing block, inserting rods are arranged on two sides of the second limiting rod and are fixedly connected with the top of the sealing block, the improved valve is characterized in that a liquid outlet channel is formed in the wall of one side of the movable cavity and is communicated with an output pipe, a movable block is arranged in the movable cavity, a pressure rod is fixedly connected to the top of the movable block, the top of the pressure rod penetrates through the top of the valve body in a sliding mode, two jacks and a limiting hole are formed in the bottom of the movable block, the part, close to the top, of the limiting hole is located in the pressure rod, the jacks and the limiting hole are respectively matched with the two inserted rods and the second limiting rod, a first spring is installed in the limiting hole, and a balance device is sleeved on the part, located outside the valve body, of the pressure rod in a sliding mode.
Further, the balancing device comprises a pressure cylinder, the pressure cylinder is slidably sleeved on the pressure rod, a box cover is sleeved on the top thread of the pressure cylinder, the bottom thread of the pressure cylinder is connected with an annular baffle, the bottom of the annular baffle is fixedly connected with the top of the valve body, a piston plate is arranged in the pressure cylinder, the bottom of the piston plate is connected with the top thread of the pressure rod, an annular supporting plate is arranged at the bottom of the piston plate, the annular supporting plate is slidably sleeved on the pressure rod, a plurality of telescopic rods are fixedly connected between the annular supporting plate and the inner wall of the bottom of the pressure cylinder, a second spring is sleeved on the telescopic rods, a flow guide pipe is connected to one side, close to the output pipe, of the pressure cylinder, and the bottom end of the flow guide pipe is communicated with the output pipe.
Furthermore, the bottom fixedly connected with annular scalable gasbag of annular layer board, the bottom and the pressure cylinder bottom inner wall fixed connection of scalable gasbag, the bottom of pressure cylinder is run through the grafting and is had a plurality of outlet ducts, and gives vent to anger and scalable gasbag intercommunication.
Further, it has anti-return plate to articulate on the output tube top inner wall, anti-return plate is closer to the valve body than the honeycomb duct, and one side that anti-return plate is close to the valve body is equipped with annular seal plate, annular seal plate and output tube inner wall fixed connection, and annular seal plate and anti-return plate phase-match.
Furthermore, the bottom of the pressure cylinder is fixedly connected with an annular guide plate, and a plurality of air outlet pipes are arranged on the inner side of the guide plate.
Furthermore, the bottom of the sealing block is fixedly connected with a sealing ring, the first limiting rod is located on the inner side of the sealing ring, and a sealing groove matched with the sealing ring is formed in the cavity wall of the bottom of the sealing cavity in the position corresponding to the sealing ring.
Furthermore, the maximum elastic force of the first spring is smaller than the friction force between the piston plate and the inner wall of the pressure cylinder, and the maximum contraction amount of the first spring is larger than the depth of the insertion hole.
Further, the whole outward appearance of valve body is incomplete spheroid, and the bottom of valve body is equipped with collects the box, collect the equal fixedly connected with link plate in both sides of box, and two link plates hang respectively on input tube and output tube.
Furthermore, the thickness of the annular baffle plate gradually becomes thicker from top to bottom, and the outer wall of the annular baffle plate is smoothly connected with the surface of the valve body.
The invention has the technical effects and advantages that:
1. when liquid carbon dioxide is injected into a wellhead, the liquid carbon dioxide enters each branch pipe through the main pipe, and the flow distribution ratio on each branch pipe can be obtained through the flow monitoring devices on each branch pipe, so that the process requirement of injecting the liquid carbon dioxide into a multi-wellhead well can be met simultaneously;
2. according to the invention, by arranging the dynamic pressure adjusting device, when liquid carbon dioxide enters the output pipe through the valve body, part of the liquid carbon dioxide can be directly injected into the wellhead, and the other part of the liquid carbon dioxide enters the pressure cylinder through the guide pipe, and the piston plate can move up and down along with the pressure change in the wellhead, so that the amount of the liquid carbon dioxide entering the valve body is regulated and controlled in real time through the sealing block, and the liquid carbon dioxide in the valve body can be ensured to be input into the wellhead at a relatively stable pressure.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic perspective view of the electric control valve and the dynamic pressure regulating device of the present invention;
FIG. 3 is a cross-sectional view of the principal plane of FIG. 2 in the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3 according to the present invention;
FIG. 5 is an enlarged view of portion B of FIG. 3 according to the present invention;
FIG. 6 is an enlarged view of the portion C of FIG. 3 according to the present invention;
FIG. 7 is an enlarged view of section D of FIG. 3 according to the present invention;
fig. 8 is a perspective view of the pressure cylinder of the present invention.
In the figure: 1. a sledge base; 2. a mounting frame; 3. a main pipe; 4. a branch pipe; 5. a pressure gauge; 6. a thermometer; 7. an electric control valve; 8. a dynamic pressure regulating device; 801. a valve body; 802. an input tube; 803. an output pipe; 804. a liquid inlet channel; 805. a sealing block; 806. a first limit rod; 807. a second limiting rod; 808. inserting a rod; 809. a liquid outlet channel; 810. a movable block; 811. a pressure lever; 812. a first spring; 9. an electric control cabinet; 10. a balancing device; 101. a pressure cylinder; 102. a box cover; 103. an annular baffle; 104. a piston plate; 105. an annular pallet; 106. a telescopic rod; 107. a second spring; 108. a flow guide pipe; 11. a collapsible air bag; 12. an air outlet pipe; 13. an anti-backflow plate; 14. an annular seal plate; 15. a baffle; 16. a seal ring; 17. a collection box; 18. the board is hung.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a flow regulating device for distributing liquid carbon dioxide, which comprises a sledge seat 1, wherein the top of the sledge seat 1 is fixedly connected with an installation frame 2, a main pipe 3 and a plurality of branch pipes 4 are installed on the installation frame 2, the plurality of branch pipes 4 are communicated with the main pipe 3, a pressure gauge 5 and a thermometer 6 are installed on the main pipe 3 and the branch pipes 4, flow monitoring devices are also installed on the branch pipes 4, each flow monitoring device comprises an electric flow regulating valve 7 and a dynamic pressure regulating device 8, and an electric control cabinet 9 for controlling the flow monitoring devices is installed on the sledge seat 1;
when the device is started for the first time, the initial value of the electric control valve 7 is set, after the liquid carbon dioxide enters each branch pipe 4 through the main pipe 3, the pressure conditions of the liquid carbon dioxide in the main pipe 3 and each branch pipe 4 can be clearly known according to the pressure gauges 5 on the main pipe 3 and each branch pipe 4, the temperature conditions of the liquid carbon dioxide in the main pipe 3 and each branch pipe 4 can be clearly known according to the temperature gauges 6 on the main pipe 3 and each branch pipe 4, after the pressure of the liquid carbon dioxide in the main pipe 3 and each branch pipe 4 is in a stable state, the flow monitoring device can automatically collect the flow and the pressure value of the liquid carbon dioxide in each branch pipe 4, then the actual flow is compared with the flow preset by the branch pipe 4, the pressure difference value between the branch pipes 4 is synthesized according to the flow deviation, the opening degree of the electric control valve 7 of each branch pipe 4 is adjusted, and the flow deviation is gradually eliminated, after the stable operation, the flow monitoring device can dynamically adjust the flow of the branch pipes 4 according to the pressure change condition of each branch pipe 4, thereby realizing the flow stability and preventing each branch pipe 4 from generating bias flow;
in addition, the dynamic pressure adjusting device 8 can automatically adjust the output pressure of the branch pipe 4 in the process of injecting the liquid carbon dioxide into the wellhead, so that the liquid carbon dioxide can be injected into the wellhead at a relatively stable pressure.
As shown in fig. 2-7, the dynamic pressure adjusting device 8 includes a valve body 801, two sides of the valve body 801 are respectively connected with an input pipe 802 and an output pipe 803, the input pipe 802 is communicated with the branch pipe 4, the electric flow adjusting valve 7 is installed on the input pipe 802, a movable cavity and a sealed cavity are formed in the middle of the valve body 801, the cross-sectional view of the main surface of the sealed cavity is inverted trapezoid, the movable cavity is located at the top of the sealed cavity and is communicated with the sealed cavity, a liquid inlet channel 804 is formed on the bottom cavity wall of the sealed cavity, the liquid inlet channel 804 is communicated with the input pipe 802, a sealed block 805 is arranged in the sealed cavity, the sealed block 805 is matched with the sealed cavity, a first limiting rod 806 is inserted at the bottom of the sealed block 805 in a sliding manner, the bottom of the first limiting rod 806 is fixedly connected with the bottom pipe wall of the liquid inlet channel 804, a second limiting rod 807 is fixedly connected at the top of the sealed block 805, the two sides of the second limiting rod 807 are both provided with an inserted rod 808, the inserted rod 808 is fixedly connected with the top of the sealing block 805, a liquid outlet channel 809 is arranged on the cavity wall on one side of the movable cavity, the liquid outlet channel 809 is communicated with the output pipe 803, a movable block 810 is arranged in the movable cavity, the top of the movable block 810 is fixedly connected with a pressure lever 811, the top of the pressure lever 811 is inserted and connected on the top of the valve body 801 in a sliding manner, the bottom of the movable block 810 is provided with two insertion holes and a limiting hole, the part of the limiting hole close to the top is positioned in the pressure lever 811, the two insertion holes and the limiting hole are respectively matched with the two inserted rods 808 and the second limiting rod 807, a first spring 812 is arranged in the limiting hole, the part of the pressure lever 811 positioned outside the valve body 801 is sleeved with the balancing device 10 in a sliding manner, the bottom of the sealing block 805 is fixedly connected with a sealing ring 16, and the first limiting rod 806 is positioned at the inner side of the sealing ring 16, the bottom cavity wall of the sealing cavity at the position corresponding to the sealing ring 16 is provided with a sealing groove matched with the sealing cavity, the maximum elastic force of the first spring 812 is smaller than the friction force between the piston plate 104 and the inner wall of the pressure cylinder 101, and the maximum shrinkage of the first spring 812 is larger than the depth of the insertion hole.
The balance device 10 comprises a pressure cylinder 101, the pressure cylinder 101 is slidably sleeved on a pressure rod 811, a box cover 102 is sleeved on the top of the pressure cylinder 101 in a threaded manner, the bottom of the pressure cylinder 101 is connected with an annular baffle 103 in a threaded manner, the bottom of the annular baffle 103 is fixedly connected with the top of a valve body 801, a piston plate 104 is arranged in the pressure cylinder 101, the bottom of the piston plate 104 is connected with the top of the pressure rod 811 in a threaded manner, an annular supporting plate 105 is arranged at the bottom of the piston plate 104, the annular supporting plate 105 is slidably sleeved on the pressure rod 811, a plurality of telescopic rods 106 are fixedly connected between the annular supporting plate 105 and the inner wall of the bottom of the pressure cylinder 101, a second spring 107 is sleeved on the telescopic rods 106, a flow guide pipe 108 is connected to one side of the pressure cylinder 101 close to an output pipe 803, the bottom end of the flow guide pipe 108 is communicated with the output pipe 803, and the thickness of the annular baffle 103 gradually increases from top to bottom, the outer wall of the annular baffle plate 103 is smoothly connected with the surface of the valve body 801;
initially, the first spring 812 generates downward pressure on the sealing block 805 through the second limiting rod 807, so that the sealing block 805 can close the liquid inlet channel 804 under the action of the pressure, when liquid carbon dioxide enters the liquid inlet channel 804 through the input pipe 802, the liquid carbon dioxide starts to generate upward thrust on the sealing block 805, so that the sealing block 805 can move upward along the first limiting rod 806, at the same time, the insertion rod 808 is gradually inserted into the insertion hole under the driving of the sealing block 805, the second limiting rod 807 gradually moves upward and compresses the first spring 812, when the insertion rod 808 contacts with the top hole wall of the insertion hole, the sealing block 805 stops moving, and the opening of the liquid inlet channel 804 is also opened, at this time, the liquid carbon dioxide can enter the liquid outlet channel 809 and the output pipe 803 through the gap between the sealing block 805 and the sealing cavity, and a part of the liquid carbon dioxide entering the output pipe 803 can be directly injected into the wellhead, and the other part of the liquid carbon dioxide enters the pressure cylinder 101 through the flow guide pipe 108, and when the liquid carbon dioxide enters the pressure cylinder 101 through the flow guide pipe 108, the pressure in the output pipe 803 fluctuates with the pressure change in the wellhead, when the pressure in the wellhead increases, the pressure in the wellhead starts to generate pressure on the liquid carbon dioxide entering the pressure cylinder 101 through the flow guide pipe 108, so that the piston plate 104 drives the pressing rod 811 and the movable block 810 to move downwards under the action of the pressure, and the telescopic rod 106 and the second spring 107 are gradually compressed, at this time, because the inserting rod 808 is completely inserted into the inserting hole, when the piston plate 104 moves downwards, the movable block 810 can press the sealing block 805 downwards through the inserting rod 808, and as the sealing block 805 moves downwards, the gap between the side surface of the sealing block 805 and the side wall of the sealing cavity gradually decreases, at this time, the amount of the liquid carbon dioxide entering the valve body 801 through the liquid inlet channel 804 is also gradually reduced, so that the pressure in the valve body 801 is also gradually reduced, when the pressure in the valve body 801 and the pressure in the pressure cylinder 101 reach a balance, the piston plate 104 and the sealing block 805 both stop moving, and at this time, the liquid carbon dioxide in the valve body 801 can be input into a wellhead at a relatively stable pressure;
when the pressure in the wellhead is reduced, the pressure of the liquid carbon dioxide on the piston plate 104 is reduced, at this time, the piston plate 104 moves upwards for a certain distance under the action of the second spring 107, the sealing block 805 moves upwards for a certain distance under the jacking action of the liquid carbon dioxide entering the valve body 801 through the liquid inlet channel 804, at this time, the gap between the side surface of the sealing block 805 and the side wall of the sealing cavity is gradually increased, so that the amount of the liquid carbon dioxide entering the valve body 801 through the liquid inlet channel 804 is gradually increased, further, the pressure in the valve body 801 is gradually increased, when the pressure in the valve body 801 and the pressure in the pressure cylinder 101 reach balance again, the piston plate 104 and the sealing block 805 both stop moving, and at this time, more liquid carbon dioxide can enter the wellhead through the outlet pipe 803;
in the above process, the pressure in the valve body 801 and the pressure in the outlet pipe 803 are dynamically adjusted by the up-and-down movement of the piston plate 104 and the sealing block 805, so as to ensure that the outlet pipe 803 can input liquid carbon dioxide into the wellhead at a relatively stable pressure.
As shown in fig. 2, fig. 3 and fig. 8, the bottom of the annular supporting plate 105 is fixedly connected with an annular telescopic airbag 11, the bottom of the telescopic airbag 11 is fixedly connected with the inner wall of the bottom of the pressure cylinder 101, the bottom of the pressure cylinder 101 is penetrated and inserted with a plurality of air outlet pipes 12, the air outlet pipes are communicated with the telescopic airbag 11, the bottom of the pressure cylinder 101 is fixedly connected with an annular guide plate 15, the air outlet pipes 12 are all positioned at the inner side of the guide plate 15, the whole appearance of the valve body 801 is an incomplete sphere, the bottom of the valve body 801 is provided with a collecting box 17, both sides of the collecting box 17 are fixedly connected with hanging plates 18, and the two hanging plates 18 are respectively hung on an input pipe 802 and an output pipe 803;
when the piston plate 104 compresses the second spring 107 under the action of the pressure of the liquid carbon dioxide at the top of the piston plate 104 and moves back and forth along the vertical direction, in the process, when the piston plate 104 moves downwards, the piston plate 104 compresses the gas in the telescopic airbag 11 through the annular supporting plate 105, so that the gas in the telescopic airbag 11 can be blown to the surface of the valve body 801 through the gas outlet pipe 12, and therefore the water drops attached to the surface of the valve body 801 due to condensation are blown to the bottom of the valve body 801, so that the water drops are prevented from being frozen on the surface of the valve body 801 due to too low temperature, and then the condensed water drops can fall into the collecting box 17 under the action of gravity, and further the sledge seat 1 is prevented from being wetted by water.
As shown in fig. 3 and 7, an anti-backflow plate 13 is hinged to the inner wall of the top of the output pipe 803, the anti-backflow plate 13 is closer to the valve body 801 than the draft tube 108, an annular sealing plate 14 is arranged on one side of the anti-backflow plate 13 close to the valve body 801, the annular sealing plate 14 is fixedly connected with the inner wall of the output pipe 803, and the annular sealing plate 14 is matched with the anti-backflow plate 13;
when the electric control valve 7 is in an open state, liquid carbon dioxide can enter the output pipe 803 through the liquid outlet channel 809 of the valve body 801, when the liquid carbon dioxide contacts the anti-backflow plate 13, the anti-backflow plate 13 starts to deflect upwards due to the jacking of the liquid carbon dioxide, so that the liquid carbon dioxide can be smoothly injected into a wellhead through the output pipe 803, when the electric control valve 7 is in a closed state, the anti-backflow plate 13 cooperates with the annular sealing plate 14 to close the output pipe 803 under the action of gravity, at this time, part of the liquid carbon dioxide still stays in the valve body 801 and the pressure cylinder 101, but because the liquid carbon dioxide stops being delivered into the wellhead, the liquid carbon dioxide staying in the valve body 801 and the pressure cylinder 101 is gradually converted into a gaseous state due to the influence of the external temperature, so that the pressure in the valve body 801 and the pressure cylinder 101 increases, and the anti-backflow plate 13 is further deflected upwards again under the pushing of the carbon dioxide gas, at this moment, carbon dioxide can be discharged out of the outlet pipe 803 through the gap between the anti-backflow plate 13 and the annular sealing plate 14, and after carbon dioxide gas is completely discharged out of the outlet pipe 803, the anti-backflow plate 13 is matched with the annular sealing plate again to close the outlet pipe 803, so that liquid carbon dioxide is prevented from being accumulated in the valve body 801 and the pressure cylinder 101, and meanwhile, oil contamination particles caused by too large pressure in a well are prevented from entering the valve body 801.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a flow control device is used in liquid carbon dioxide distribution, includes sledge seat (1), its characterized in that: the top of the sledge seat (1) is fixedly connected with a mounting frame (2), a main pipe (3) and a plurality of branch pipes (4) are mounted on the mounting frame (2), the branch pipes (4) are communicated with the main pipe (3), a pressure gauge (5) and a thermometer (6) are mounted on the main pipe (3) and the branch pipes (4), a flow monitoring device is further mounted on each branch pipe (4), the flow monitoring device comprises an electric flow regulating valve (7) and a dynamic pressure regulating device (8), and an electric control cabinet (9) for controlling the flow monitoring device is mounted on the sledge seat (1);
the dynamic pressure adjusting device (8) comprises a valve body (801), an input pipe (802) and an output pipe (803) are connected to two sides of the valve body (801) respectively, the input pipe (802) is communicated with a branch pipe (4), a flow electric adjusting valve (7) is installed on the input pipe (802), a movable cavity and a sealed cavity are formed in the middle of the valve body (801), the main surface cross-sectional view of the sealed cavity is inverted trapezoid, the movable cavity is located at the top of the sealed cavity and communicated with the sealed cavity, a liquid inlet channel (804) is formed in the bottom cavity wall of the sealed cavity and communicated with the input pipe (802), a sealing block (805) is arranged in the sealed cavity and matched with the sealed cavity, a first limiting rod (806) is inserted into the bottom of the sealing block (805) in a sliding mode, the bottom of the first limiting rod (806) is fixedly connected with the bottom pipe wall of the liquid inlet channel (804), the top of the sealing block (805) is fixedly connected with a second limiting rod (807), two sides of the second limiting rod (807) are respectively provided with an inserted rod (808), the inserted rods (808) are fixedly connected with the top of the sealing block (805), a liquid outlet channel (809) is formed in the cavity wall on one side of the movable cavity, the liquid outlet channel (809) is communicated with an output pipe (803), a movable block (810) is arranged in the movable cavity, the top of the movable block (810) is fixedly connected with a pressing rod (811), the top of the pressing rod (811) slides to penetrate through and be inserted into the top of the valve body (801), the bottom of the movable block (810) is provided with two inserting holes and a limiting hole, the part of the limiting hole, which is close to the top, is positioned in the pressing rod (811), the two inserting holes and the limiting hole are respectively matched with the two inserted rods (808) and the second limiting rod (807), and a first spring (812) is arranged in the limiting hole, the part of the compression bar (811) outside the valve body (801) is sleeved with a balancing device (10) in a sliding manner;
the balance device (10) comprises a pressure cylinder (101), the pressure cylinder (101) is sleeved on a compression bar (811) in a sliding mode, a box cover (102) is sleeved on the top of the pressure cylinder (101) in a threaded mode, the bottom of the pressure cylinder (101) is connected with an annular baffle (103) in a threaded mode, the bottom of the annular baffle (103) is fixedly connected with the top of a valve body (801), a piston plate (104) is arranged in the pressure cylinder (101), the bottom of the piston plate (104) is connected with the top of the compression bar (811) in a threaded mode, an annular supporting plate (105) is arranged at the bottom of the piston plate (104), the annular supporting plate (105) is sleeved on the compression bar (811) in a sliding mode, a plurality of telescopic rods (106) are fixedly connected between the annular supporting plate (105) and the inner wall of the bottom of the pressure cylinder (101), a second spring (107) is sleeved on the telescopic rod (106), and a flow guide pipe (108) is connected to one side, close to an output pipe (803), of the pressure cylinder (101), and the bottom end of the draft tube (108) is communicated with the output tube (803).
2. The flow rate regulating device for dispensing liquid carbon dioxide as claimed in claim 1, wherein: the bottom fixedly connected with annular scalable gasbag (11) of annular layer board (105), the bottom and the pressure section of thick bamboo (101) bottom inner wall fixed connection of scalable gasbag (11), the bottom of pressure section of thick bamboo (101) is run through the grafting and is had a plurality of outlet ducts (12), and gives vent to anger and scalable gasbag (11) intercommunication.
3. The flow rate regulating device for dispensing liquid carbon dioxide as claimed in claim 1, wherein: articulated on output tube (803) top inner wall have anti-return plate (13), anti-return plate (13) are closer to valve body (801) than honeycomb duct (108), and one side that anti-return plate (13) are close to valve body (801) is equipped with annular seal board (14), annular seal board (14) and output tube (803) inner wall fixed connection, and annular seal board (14) and anti-return plate (13) phase-match.
4. The flow rate regulating device for distributing liquid carbon dioxide according to claim 2, wherein: the bottom of pressure cylinder (101) is fixedly connected with annular guide plate (15), and a plurality of outlet ducts (12) all are located the inboard of guide plate (15).
5. The flow rate regulating device for dispensing liquid carbon dioxide as claimed in claim 1, wherein: the bottom fixedly connected with sealing ring (16) of sealed piece (805), and first gag lever post (806) are located the inboard of sealing ring (16), and sealing ring (16) correspond the position seted up on the sealed chamber bottom chamber wall with its assorted seal groove.
6. The flow rate regulation device for distributing liquid carbon dioxide according to claim 4, wherein: the maximum elastic force of the first spring (812) is smaller than the friction force between the piston plate (104) and the inner wall of the pressure cylinder (101), and the maximum contraction amount of the first spring (812) is larger than the depth of the insertion hole.
7. The flow rate regulation device for distributing liquid carbon dioxide according to claim 3, wherein: the bottom of valve body (801) is equipped with collects box (17), the equal fixedly connected with link plate (18) in both sides of collecting box (17), and two link plates (18) hang respectively on input tube (802) and output tube (803).
8. The flow rate regulation device for distributing liquid carbon dioxide according to claim 7, wherein: the thickness of the annular baffle (103) is gradually thickened from top to bottom, and the outer wall of the annular baffle (103) is smoothly connected with the surface of the valve body (801).
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| CN202210392272.5A CN114484280B (en) | 2022-04-15 | 2022-04-15 | Flow regulating device for liquid carbon dioxide distribution |
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| CN202210392272.5A CN114484280B (en) | 2022-04-15 | 2022-04-15 | Flow regulating device for liquid carbon dioxide distribution |
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| DE102012013557A1 (en) * | 2012-07-07 | 2014-01-09 | Festo Ag & Co. Kg | Valve for controlling fluid flows |
| MX2015008574A (en) * | 2012-12-31 | 2015-10-09 | Ge Oil & Gas Pressure Control Lp | Non-rising stem actuator. |
| CN103032179A (en) * | 2013-01-04 | 2013-04-10 | 江苏公大动力技术有限公司 | Timing control system and method for variable valve |
| CN105247435A (en) * | 2013-03-25 | 2016-01-13 | Ad文塔公司 | Compact inverted pressure regulator for dispensing gas |
| CN204099635U (en) * | 2014-10-08 | 2015-01-14 | 李立贤 | Angle-style Flow-rate adjustment controls ball valve |
| CN106498136B (en) * | 2016-12-30 | 2018-04-03 | 上海颐柏热处理设备有限公司 | A kind of device of high-pressure liquid or above-critical state quenching |
| CN106869883B (en) * | 2017-02-17 | 2023-05-26 | 中国石油化工股份有限公司 | Automatic oil supply and discharge device and method |
| CN206988819U (en) * | 2017-07-31 | 2018-02-09 | 西安科技大学 | A kind of mining liquid carbon dioxide conveying device |
| CN107378635A (en) * | 2017-09-22 | 2017-11-24 | 东莞安默琳机械制造技术有限公司 | A kind of supercritical carbon dioxide central liquid supply system |
| CN108167507B (en) * | 2017-12-08 | 2020-02-21 | 北京航天计量测试技术研究所 | High-pressure micro-adjusting valve based on air spring |
| CN108087602B (en) * | 2017-12-15 | 2020-03-17 | 上海瀚氢动力科技有限公司 | Integrated pressure reducing valve |
| CN112610735A (en) * | 2020-12-08 | 2021-04-06 | 孙洋洋 | Fire-fighting pressure-relief explosion-proof safety valve |
| CN214222124U (en) * | 2021-02-04 | 2021-09-17 | 关晋涛 | Precise and small self-operated pressure regulating valve for nuclear power |
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Effective date of registration: 20221202 Address after: 100020 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: SINOPEC SHENGLI OILFIELD Co. Address before: 257088 No. 125, Jinan Road, Dongying District, Dongying City, Shandong Province Patentee before: SINOPEC SHENGLI OILFIELD Co. |
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